Ryan said: “He [Kyle] currently lives on the other side of the country so we keep in touch via WhatsApp, phone calls, and now with mail packages.

“When I first received the mug in the mail I was very curious as the mug was so black and I couldn’t figure out why Kyle would send that. I decided to make some coffee later in the day in the afternoon and used the new mug.

“As the water heated the mug the black exterior slowly started to disappear. It was very cool because the water seemed to heat the cup from the bottom to the top, slowly revealing the hidden game beneath it.

“As I realised what was on the mug I remember muttering ‘son of a bitch’.”